And if you are honest about the words coming out of your characters' mouths, you'll find that you've let yourself in for a fair amount of criticism.
Stephen KingThe good folks mostly win, courage usually triumphs over fear, the family dog hardly ever contracts rabies: these are things I knew at twenty-five, and things I still know now, at the age of 25 x 2. But I know something else as well: there's a place in most of us where the rain is pretty much constant, the shadows are always long, and the woods are full of monsters. It is good to have a voice in which the terrors of such a place can be articulated and its geography partially described, without denying the sunshine and clarity that fill so much of our ordinary lives. (viii)
Stephen King